Read e-book online Agriculture, Trade and the Environment: The Pig Sector PDF

By Organisation for Economic Co-Operation and Development

ISBN-10: 926410416X

ISBN-13: 9789264104167

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Additional resources for Agriculture, Trade and the Environment: The Pig Sector (Agriculture, Trade and the Environment)

Example text

While the number of pigs raised in Japan has also decreased, this decline has been at a much slower rate, leading to a 21% annual increase in the average numbers of pigs per farm. In Korea, pig numbers increased at an annual rate of 8% between 1990 and 2000. With an 8% annual decrease in the number of pig holdings, the average herd size was almost ten times higher in 2000. While pig numbers declined slightly in Australia, the number of pig holdings fell by 6% per year during the period 1990-2000, leading to a 16% annual increase in the average herd size.

The point at the tail of an arrow refers to 1985-87 and the point at the head of an arrow refers to 1995-97. htm. While this national level data can provide a good entry point for analysis and can be a reasonable indicator for small countries such as Denmark, Belgium and the Netherlands, it needs to be supplemented with regional information for larger countries because of the local nature of the problem. Using regional nitrogen balance information and data on the regional and distribution of pig production within countries (Chapter 3), it is evident that there are regions within some of the low-risk countries where the risk of water pollution from pig production is very high.

3). In pig farming areas the disposal of excess nutrients, principally nitrogen and phosphorus, from pig manure are among the principal causes of pollution of surface water (rivers and lakes), groundwater, and marine waters. e. algae growth and depletion of oxygen in water) and degrade their use for recreational purposes, such as fishing (OECD, 2001a). Nutrients in surface water and groundwater can also impair drinking water quality and increase purification costs, and in high enough concentrations lead to human health problems.

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Agriculture, Trade and the Environment: The Pig Sector (Agriculture, Trade and the Environment) by Organisation for Economic Co-Operation and Development


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